Boundary Dam is located 107 miles north of Spokane in Pend Oreille County in the far northeast corner of Washington State.
To reach the dam, boat ramp and picnic areas from Seattle:
Follow I-90 for 278 miles and take Exit 281 towards Newport/Colville. Merge and turn right on US Highway 2 Eastbound. Turn left on WA Highway 211 Northbound. Take a left on State Route 20 West/WA 20 West.
Go north from Metalline on State Highway 31, turn on County Road 62, Boundary Road. Drive for 11.5 miles and turn right on to the Boundary Dam Access Road.